Temporary change dir on bash file

I have a project which has web code and server code, to build the project, I need to build the web module first, then build the server code. Because the directory is different, so I need to navigate to the web folder and build, then navigate back to build the server code.

For example, my project has structure like below:

├── build.sh (1)
├── frontend
│ └── web
│ └── build.sh (2)
└── main.go

With the first example, I need call second build.sh in the first build.sh file, that means in the first build.sh file, I need to temporary change the directory to frontend/web, then call build.sh file, then move back to build the server code.

So in the first build.sh file, I can write code like below:

(cd frontend/web && build.sh)